K18 Biomimetic Hairscience
DAMAGE SHIELD pH Protective Shampoo
Highly rated by customers for: , ,
$36.00get it for $34.20 (5% off) with Auto-Replenishor 4 payments of $9.00 with or
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Size: 8.5 oz
Standard size
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Highlights

About the Product
Item 2731867
Only at Sephora
What it is: A color-safe, pH-optimized shampoo to effectively cleanse while maintaining hair health, preventing frizz, preserving color, and enhancing shine.
Hair Texture: Straight, Wavy, Curly, and Coily
Hair Type: Fine, Medium, and Thick
Hair Concerns:
- Color Safe
- Damage, Split Ends, and Breakage
- Frizz
Key Benefits:
- This pH-optimized formula helps minimize damage during washing and supports hair health and strength
- Prevents tangling + frizz, preserves color, enhances shine
- Microbiome-certified to help maintain scalp health and preserve scalp’s natural microbiome
Highlighted Ingredients:
- K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.
- Plant-Derived Surfactants: Create a gentle, high-foaming cleanse without leaving buildup behind.
Ingredient Callouts: It is gluten-free and cruelty-free.
What Else You Need to Know: This pH-optimized formula helps reduce excess swelling of the hair cuticle during washing to help prevent damage and tangling, reduce frizz, preserve color, and enhance shine. It is formulated with the K18PEPTIDE™ to replenish hair during washing. This shampoo is also scalp-microbiome friendly and gentle enough for every wash.
Fragrance Description: This shampoo has a clean citrus scent.
Clinical Results: Results observed in a consumer test of 35 subjects after 21 days of consistent use of the DAMAGE SHIELD pH protective shampoo:
- 91% said hair looks healthier
- 91% said hair feels smoother
- 91% said hair does not feel weighed down
CLEAN at Sephora is our commitment to offering formulas that go beyond regulatory standards to avoid controversial ingredients without sacrificing on effectiveness.
This product is an Allure Best of Beauty award winner.
Hair Texture: Straight, Wavy, Curly, and Coily
Hair Type: Fine, Medium, and Thick
Hair Concerns:
- Color Safe
- Damage, Split Ends, and Breakage
- Frizz
Key Benefits:
- This pH-optimized formula helps minimize damage during washing and supports hair health and strength
- Prevents tangling + frizz, preserves color, enhances shine
- Microbiome-certified to help maintain scalp health and preserve scalp’s natural microbiome
Highlighted Ingredients:
- K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.
- Plant-Derived Surfactants: Create a gentle, high-foaming cleanse without leaving buildup behind.
Ingredient Callouts: It is gluten-free and cruelty-free.
What Else You Need to Know: This pH-optimized formula helps reduce excess swelling of the hair cuticle during washing to help prevent damage and tangling, reduce frizz, preserve color, and enhance shine. It is formulated with the K18PEPTIDE™ to replenish hair during washing. This shampoo is also scalp-microbiome friendly and gentle enough for every wash.
Fragrance Description: This shampoo has a clean citrus scent.
Clinical Results: Results observed in a consumer test of 35 subjects after 21 days of consistent use of the DAMAGE SHIELD pH protective shampoo:
- 91% said hair looks healthier
- 91% said hair feels smoother
- 91% said hair does not feel weighed down
CLEAN at Sephora is our commitment to offering formulas that go beyond regulatory standards to avoid controversial ingredients without sacrificing on effectiveness.
This product is an Allure Best of Beauty award winner.
-K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.
-Plant-Derived Surfactants: Create a gentle, high-foaming cleanse without leaving buildup behind.
Water (Aqua) (Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl 2-Sulfolaurate, Sodium Lauryl Sulfoacetate, sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, Guar Hydroxypropyltrimonium Chloride, Disodium 2-Sulfolaurate, Caprylyl Glycol, Caprylhydroxamic Acid, Benzoic Acid, Citric Acid, Sodium Hydroxide, Fragrance (Parfum), Limonene.
The list of ingredients is subject to change, please consult the packaging of the product purchased.
-Plant-Derived Surfactants: Create a gentle, high-foaming cleanse without leaving buildup behind.
Water (Aqua) (Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl 2-Sulfolaurate, Sodium Lauryl Sulfoacetate, sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, Guar Hydroxypropyltrimonium Chloride, Disodium 2-Sulfolaurate, Caprylyl Glycol, Caprylhydroxamic Acid, Benzoic Acid, Citric Acid, Sodium Hydroxide, Fragrance (Parfum), Limonene.
The list of ingredients is subject to change, please consult the packaging of the product purchased.
Suggested Usage:
-Massage into hair, focusing on scalp.
-Thoroughly rinse.
-Repeat as needed.
-For best results follow with the DAMAGE SHIELD protective conditioner (sold separately).
-Massage into hair, focusing on scalp.
-Thoroughly rinse.
-Repeat as needed.
-For best results follow with the DAMAGE SHIELD protective conditioner (sold separately).
Similar Products
Price
Rating
Ingredient Highlights

$36.00
566
Good for: Frizz, Good for: Damage, Good for: Color Care, Increases Shine, allure 2024 Clean Beauty Winner, All Hair Types
$28.00 - $44.00
($52.00 value)
267
Antioxidants, Paraben-free, Sulfate-free, Vegan
$14.00 - $68.00
($77.00 value)
860
Clean at Sephora, Paraben-free, Silicone Free, Sulfate-free, Vegan
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Meet K18 | We’re the biotech breakthrough that’s rewriting the rules on hair care. After 10 years of complex bioscience research, we unlocked our patented K18Peptide that reverses hair damage in four minutes. Born in the salon, stylists, colorists, and hair expressors of all generations are liberating self-expression without having to worry about damage. Our leave-in molecular repair hair mask works with the biology of your hair to strengthen from the inside out.